Manufacture of chewing gum



k to adhere to the temperatures during manufacture.

.Patentecl May 14, 1935 MANUFACTI JBE OF CHEWING Alfred Falk, Manic Germany No Drawing. Application March 24,

1 .Claim. ((31. 99-16) may be used or added without detrimentally af-' In the manufacture of chewing gum'it is, in general, usual to mix the foundation, that is a raw rubber mass, with certain resins or the purpose of imparting the desired consistency. to the gum and causing the medicinal and-flavouring ingredients which are usually added, to amalga mate and coalesce more readily with the said rubbery mass or foundation.

Chewing gum masses mixed with said resins, however, 'do not possess the desirable tractility, they are rather very sticky and particularly tend teeth and cannot stand higher For this reason they cannot be used except A limits, in particular not in case that the special ingredients to be mixed therewith, require comparatively high temperatures for a thorou and intimate mixture.

Now, I have found that the above stated defects or disadvantages can be overcome by employing e-dammaro-resene, (see Tschirch, Harze und Harzbehiilter, 1906, vol. I, pages 48'? and 488) in lieu ofrthe hitherto used resins. Chewing manufactured'in this way, that is to say, by mixing the original rubbery mass with an adequate proportion of a-dammaro-resene, is far superior to hitherto known gums as regards tractility or extensibility and, therefore, can be mixed most intimately and thoroughly with any required accordingto the present invention a-dammaro-resene as a constituent will keep up its consistency for a longtime even under'the influence of air and light, and, a long time be coated with a protective covering of sugar or the like as hitherto done. The same also stands temperatures up to about 190 C. without beginning to it is also possible to gradually add to the rubbery mass ingredients of .a high melting point at a temperature a few degrees only below the said high melting point and to; thus cause the same to intimately coalesce with the rubbery mass, to form a homogeneous substance.

Obviously the proportion of d-dammaro-resene to beadded to the rubbery mass may vary in accordance with the particular properties and the amount of the other ingredients to some cases an me of a-dammaro-resene amounting to about 1 per cent of the weight of the rubbery mass, will answer the purpose well, but even considerably larger proportions of or.-

dammaI -resene up to 10 per cent and still more,

within narrow burn. Consequently be added. In-

fecting the propertiesof the chewing gum, as otherwise would be the case portions of the usual resins For a-dammaro-resene same 1933, Serial In Germany-April 19, 1932 if similarly high probasic alkaline body, but a neutral one in contradistinotion to other resins.

The following examples will serve to illustrate the nature of the invention, but they are merely 10 typical cases and can be varied without departure from the nature by metric weight.

100 gr. of purified crude rubber such of the invention. The

' Example I were added to the is not an acid or parts are as, for 15 instance, chicirubber, are comminuted in a mortar and subsequently subjected to a washing operation which 'is to be accomplished with successive small tinued for a sufllcient dried' in any quantities of water only and congr. and is again of powdered sugar.

The resulting powder is forced through a hairs'ieve and subsequently mixed with 1 gr. of 11- dammaro-resene. the mass is heated in a sand-bath, with continuous stirring, until the same commences to melt or flow, whereupon are added to the In the next following operation allowed to cool down quently :6 gr.

mixture then agitated and, to about 38 further 30 gr. of mixture with constant stirring.

to about 40 C. and subseof carefully puverized rhatany are 5 added thereto with continuous stirring.

length'of "time to remove all impurities, whereupon the resulting mass is appropriate way. The dry mass tr'iturated in a In the next step of the process powdered sugar the mixture is The is once more worked through and having been allowed 0., intimately mixed'with about 5 gr. of carefully powdered myrrh without discontinuing agitation. In ess, when the mixture ester (denominated finally admixed and the next step of the prochas cooled down to cool down 3 to about of powdered salicylic-acid phenylic as salol menthol and 0.001

gr. of'pulverulent citric acid are added to the just will deliquesce. ufactured in this way is prefto a final mixing and agitating to its disintegration into the shaped articles.

The crude- Ezample II rubber after having been commiin the trade) are the latter has cooled that is a temperature and heated slowly to a temperature of 145 0., The mixture is allowed to cool down to 139 C. when 12 parts of aceto-p-phenetidine (phenacetine) having a. melting point of 135 C., are added to and thoroughly mixed] with the hot mass while ALFRED FALK. 

